/Engine/Source/Runtime/MovieScene/Public/MovieSceneSequence.h
Find the first object binding ID associated with the specified tag name (set up through RMB->Expose on Object bindings from within sequencer)
[FMovieSceneObjectBindingID](API\Runtime\MovieScene\FMovieSceneObjectBindingID) FindBindingByTag ( [FName](API\Runtime\Core\UObject\FName) InBindingName ) const